Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Subbana G Muthuswami, MD

Geriatric Medicine (Internal Medicine) Physician in Port Huron, MI · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1093875536

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Registry record

Entity type Individual (Type 1)

Name Subbana G Muthuswami

Credential MD

Sex Male

Practice address 2603 Electric Ave, #1, Port Huron, MI, 48060

Phone (810) 987-5252

Fax (810) 987-2120

Enumeration date Dec 12, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 4301033903 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
2109010	Medicaid	MI	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Subbana Muthuswami?

Subbana Muthuswami is registered in NPPES with the primary taxonomy of Geriatric Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.